VoyT, the Archdiocese paid for the settlements by selling valuable real estate to Boston College, and reached an agreeement to sell more real estate to BC in the future. The real estate is/was part of the seminary grounds and the bishop's mansion, and it's right across from the BC campus. Hardly anyone goes to the seminary anymore, and Archbishop O'Malley didn't want to live in the bishop's mansion, and BC has wanted the property for a long time. The Archdiocese also reached settlements with its insurers later.
The major ongoing problem is nobody wants to give to the Archdiocese's annual appeal anymore, because of how the Archdiocese messed up.